-Open weather.com
-type in your city and search
-in the menu bar, you’ll find an 8 digit code that looks like this CAXX0504
-SSH into the device
-go to /System/Library/LockCydgets/HTCHero.cydget/Private
-find ConfigureMe.js and download it to your desktop
-open ConfigureMe.js with a text editor
-if you want celsius, change var isCelsius = false to true
-beside var locale = put your city code. Mine is CAXX0504
That’s it folks. That is how it’s explained for 99.9% of the people out there.
If you think it’s worth the hassle, enjoy.